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VI. Methods of Tree Protection. <br />A. Planning and considerations. Tree space is the most critical factor in tree <br />protection throughout the development process. The root system of trees can easily <br />extend beyond the dripline of the tree canopy (Figure 1). The root system within the <br />dripline region is generally considered to be the protected root zone. Disturbance <br />within this zone can directly affect a tree's chances of surv ival. With reference to root <br />zones, the following standards shall apply: <br />1. <br />3. <br />Tne use of tree save islands and stands is encouraged rather than the <br />protection of individual (nonspecimen) trees scattered throughout a <br />site. Tliis will facilitate ease in overall site organization as related to <br />tree protection. <br />The protective zone of specimen trees or stands of trees or otherwise <br />designated tree save areas shall include no less than the total area <br />beneath the tree(s) canopy as defined by the farthest canopy dripline <br />of the tree(s). In some instances, the Zoning Administrator may <br />require a protective zone in excess of the area defined by the tree's <br />dripline. <br />Layout of the project site utility and grading plans shall accommodate <br />the required tree protective zones. Utilities must be placed along <br />corridors between tree protective zones. <br />Construction site activities such as parking, material storage, concrete <br />washout, hole placement, etc., shall be arranged so as to prevent <br />disturbances within tree protective zones. <br />Alterations to the protective zone of the specimen trees or stands of <br />trees must be approved by the Zoning Administrator. <br />B. Protective Barriers. <br />2. <br />3. <br />Active protective tree fencing shall be installed along the outer edge <br />of and completely surrounding the critical root zones of all specimen <br />trees or stands of trees, or otherwise designated tree protective zones, <br />prior to any building construction. <br />These fences will be a minimum four feet (4'1 high. Four-feet (4') high <br />orange polyethylene laminar safety fencing is acceptable (Figure 2). <br />Passive forms of tree protection may be utilized to delineate tree save <br />areas which are remote from areas of land disturbance. These areas